Question

1.4z + -0.6= .2 (5 +3z)

Answer 1

z=2/3
decimal z=0.66667
do you need a graph?

Answer 2

1.4z-0.6 =0.2 (5+3z)
1.4z-0.6 = 1 + 0.6z
       +0.6  +0.6
1.4z=1.6+0.6z
-0.6z     -0.6z
0.8z=1.6
/0.8    /0.8
z=2

Hopefully, I did my math right and that this helps!